Aspiring engineers who are preparing for the Graduate Aptitude Test in Engineering (GATE) understand the significance of thorough preparation and comprehensive study resources.

Through a meticulous examination of previous years’ question papers, we aim to provide you with valuable insights, key trends, and effective strategies to excel in Power System for your GATE exam.

## GATE EE Syllabus for the Subject Power System

Basic concepts of electrical power generation, ac and dc transmission concepts, Models and performance of transmission lines and cables, Economic Load Dispatch (with and without considering transmission losses),

Series and shunt compensation, Electric field distribution and insulators, Distribution systems, Per‐unit quantities, Bus admittance matrix,

Gauss-Seidel and Newton-Raphson load flow methods, Voltage and Frequency control, Power factor correction, Symmetrical components,

Symmetrical and unsymmetrical fault analysis, Principles of over‐current, differential, directional and distance protection; Circuit breakers, System stability concepts, Equal area criterion

## Analysis of Previous GATE Papers for Power System

Year | Percentage of Marks |
---|---|

2023 | 11% |

2022 | 8 % |

2021 | 12 % |

2020 | 10 % |

2019 | 11 % |

2018 | 10 % |

2017 | 9.50% |

2016 | 10% |

2015 | 10 % |

2014 | 12 % |

2013 | 10 % |

## Recent GATE Paper Questions of Power System

The following questions have been asked from Power System, in GATE-EE 2023 Paper.

Q. The bus admittance (Ybus) matrix of a 3-bus power system is given below:-

\begin{bmatrix} -j15 & j10 & j5\\j10 & -j13.5 & j4\\j5 & j4 & -j8\end{bmatrix}Considering that there is no shunt inductor connected to any of the buses, which of the following can NOT be true?

A) Line charging capacitor of finite value is present in all three lines

B) Line charging capacitor of finite value is present in line 2-3 only

C) Line charging capacitor of finite value is present in line 2-3 only and shunt capacitor of finite value is present in bus 1 only

D) Line charging capacitor of finite value is present in line 2-3 only and shunt capacitor of finite value is present in bus 3 only

Q. An infinite surface of linear current duration K=5\widehat{a_{x}}A/m exists on the x-y planes as shown in the figure. The magnitude of the magnetic field intensity (H) at a point (1, 1, 1) due to the surface current in ampere/meter is ________. . (Round Off to 2 decimal places)

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